There also many examples of poor HDR out there. The use of HDR on pre-1970 films is up for debate and requires a VERY skilled hand at the tiller if you will. Given the choice, and the fact that there isn't 4K of information in the frame, notwithstanding the passing of Romero, Criterion made the...
I'm thinking more about the elements. Given that NOLTD was a very low budget film, the question remains whether there was any HDR data to be gleaned. I'm leaning toward the negative.
Given the copyright history of this one, can't say I'm surprised. RAH, I'm trying to remember if you posted anything about the elements used when you looked at the original Criterion Blu-ray.